Our Team

A woman smiling outdoors with mountains, trees, and a river in the background.

Cassie Ayoungman (she/her)

CEO/Founder

Cassie Ayoungman is a proud Siksika’ki (Blackfoot woman) raised on Siksika Nation and the Founder and CEO of Soul of Miistaki. While basketball was a big part of her upbringing, Cassie didn’t discover mountain sports until her mid-twenties. As she found her way into hiking, climbing, biking, and skiing, she began to notice how little representation there was for Indigenous and BIPOC people in outdoor spaces. That experience became part of what inspired her to create Soul of Miistaki.

Today, Soul of Miistaki is an Indigenous-led nonprofit creating welcoming outdoor experiences that bring people together through movement, Indigenous teachings, and time on the land. For Cassie, it has become a way to share something she discovered later in life with her community and create opportunities for others to find their own place in the outdoors.

Cassie also works with Destination Blackfoot, supporting tourism operators across the Blackfoot Confederacy and helping share Blackfoot-owned experiences with visitors. She is also an Associate Consultant with Tatâga Inc.

Her background includes emergency services, grassroots organizing, and 11 years as a Reservist with the Canadian Armed Forces. She was awarded the Queen Elizabeth II Platinum Jubilee Medal for her service. Her work has been featured by Canadian Geographic and Mountain Life Media.

A woman with curly brown hair wearing a gray beanie and a gray Arc'teryx jacket smiling outdoors with mountains, trees, and a cloudy sky in the background.

Lexie Obey (she/her)

Director of Development & Community Coordinator

Lexie, a dedicated youth worker, silviculturist, and community organizer, proudly identifies as Nehhiyaw from Piapot First Nations in Saskatchewan (paternal side) and Michif (maternal side). Lexie has been actively involved in supporting Indigenous youth in healing center environments since 2018.

With a deep passion for land-based experiences, Lexie initiated a grassroots Indigenous Youth Climbing Program in Regina, SK, in 2021, fostering connections with Indigenous youth through movement. She sees Soul of Miistaki as an organization closely aligned with her values of community cultivation and fostering relationships with the land. Infusing intentionality and gratitude into her programming, Lexie aims to extend her enthusiasm for climbing and trail running to fellow BIPOC community members while serving as a steward for the lands we reside and recreate on.

A smiling woman with tattoos on her thighs, wearing a helmet and climbing harness, tying a pink climbing rope in a rocky outdoor setting with another person in the background.

Photo Credit : Camille Santiago

Coralia Sevilla (she/ella)

Community Coordinator & Communications

Coralia Diane Sevilla is a school teacher in Mînî Thnî and a part-time climber instructor Calgary. Education and Outdoor recreation have been significant fields of work for Coralia because of the lack of representation of visible minorities in these industries. In her youth, Coralia didn’t see her cultural values as a Nahua Nicarao woman appreciated. Now, she uses her roles to ensure that many people feel acknowledged and valued more holistically.

“Soul of Miistaki represents a safe place that allows me to emotionally connect with the land and learn about different cultures through my peers in a way that humanizes and values our personal journeys.”

Coralia feels empowered to support others to build upon their skills within their outdoors pursuits and pay forward her opportunities through Soul Of Miistaki. Through working with Soul of Miistaki, Coralia hopes to continue building a community around her and pushing herself outside of her comfort zone with her outdoor and personal goals.

Mack Brown

Photo Credit : Cody Shimizu

Mackenzie Kamâmak Brown (she/they)

Board Member: Board Chair

Mackenzie Kamâmak Brown is a 30 year old Cree artist, educator, and community leader from Sturgeon Lake Cree Nation, now based in Calgary. As the owner of Kamâmak, she bridges Indigenous and non-Indigenous communities through cultural education, storytelling, and art. Her background includes serving as Director of Industry Development at Indigenous Tourism Alberta, where she helped grow the organization’s membership province-wide and led the creation of Business development, resources, and cultural-awareness training and allyship resources now used across Canada. She is currently the Executive Advisor of Indigenous relations at the Glenbow Museum, where she works with communities from turtle island and beyond to help with repatriation, reconciliation, strategy development, community engagement and curatorial vision.

A multidisciplinary creative, Kamâmak is a muralist, painter, traditional crafts artist, drummer, and singer. She performs nationally and internationally with Warrior Women, a performance and teaching duo she created with her mother. Her work is grounded in Cree culture and language, which she continues to revitalize through public art, education, and weekly Cree-language classes. Recognized with numerous awards -- including Calgary Mayors indigenous Artist of the Year 2025 and Avenue Magazine’s Top 40 Under 40 -- she is dedicated to fostering connection, understanding, and cultural pride through every facet of her practice.

A young man sitting on a wooden railing of a bridge over a lake, surrounded by tall pine trees and mountains in the background, on a cloudy day.

Theoren Royal (he/him)

Board Member: Secretary

Theoren Royal is a member of the Siksika Nation and serves as Manager of Corporate Affairs and Communications for the Blackfoot Confederacy Tribal Council, representing the collective interests of the Siksika, Kainai, Piikani, and Amskapi Piikani Nations. With over a decade of experience across sectors including human and social services, economic development, tourism, energy, and investment, he leads the development and execution of strategic communications and marketing initiatives that support Nation-building priorities. His work spans high-level government relations, major event coordination, digital media strategy, and the advancement of initiatives such as Destination Blackfoot, cross-border advocacy, and Confederacy-wide programs aligned with long-term strategic planning.

Grounded in his identity as Niitsitapi, Theoren Royal’s work is driven by a commitment to advancing the well-being of Siksikaitsitapi and upholding the legacy of his people. Recognized for his ability to translate complex ideas into impactful messaging, he applies expertise in branding, storytelling, and digital engagement to strengthen organizational presence and influence. His approach centers on communications as a tool for connection, ensuring that Blackfoot voices, priorities, and stories are effectively represented across local, national, and international platforms.